package com.reflection;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

//  获得类的信息
public class Test08 {
    public static void main(String[] args) throws ClassNotFoundException, NoSuchFieldException, NoSuchMethodException {
        Class c1 = Class.forName("com.reflection.User");

//        User user = new User();
//        c1 = user.getClass();
        
        //  获得类的名字
        System.out.println(c1.getName());      //  获得 包名 + 类名
        System.out.println(c1.getSimpleName());//  获得类名

        //  获得类的属性
//        Field[] fields = c1.getFields();  //  只能找到public属性
//        for (Field field : fields) {
//            System.out.println(field);
//        }
        Field[] fields = c1.getDeclaredFields();  //  找到全部的属性
        for (Field field : fields) {
            System.out.println(field);
        }

        //  获得指定属性的值
        Field name = c1.getDeclaredField("name");
        System.out.println("name = " + name);

        //  获得类的方法
        System.out.println("================");
        Method[] methods = c1.getMethods();  //  获取本类及其父类的全部public方法
        for (Method method : methods) {
            System.out.println("正常的方法："+method);
        }
        methods = c1.getDeclaredMethods();  //  获取本类的所有方法
        for (Method method : methods) {
            System.out.println("Declared方法："+method);
        }

        //  获取指定方法
        //  重载
        Method getName = c1.getMethod("getName", null);
        System.out.println("getName = " + getName);
        Method setName = c1.getMethod("setName", String.class);
        System.out.println("setName = " + setName);

        //  获得指定的构造器
        System.out.println("================");
        Constructor[] constructors = c1.getConstructors();
        for (Constructor constructor : constructors) {
            System.out.println("constructor = " + constructor);
        }
        constructors = c1.getDeclaredConstructors();
        for (Constructor constructor : constructors) {
            System.out.println("declaredConstructor = " + constructor);
        }

        //  获得指定的构造器
        Constructor constructor = c1.getConstructor(String.class, int.class, int.class);
        System.out.println("指定 = " + constructor);

    }
}

